Work support for lathes



A.Aug. 14, 1945.

l.. M.`HoL.f-rz V 2,381,956

WORK SUPPORT FOR LATHES Filed Aug. 30, 1944 2v Sheets-Shea?I 2 j l L" l 2.5

Inventor lathes, and Y'hasv more particular reference? to port primarily designedv for holding a Gaby grinder 2,381,356 UPPQR'L .\;Ioltz, 1111....V i. I

This' invention 1vrelatestoahvvorksuppl) t for n are fFi ure ElV is Aa perspective view of one of the plates of the base clamp forming part of the work support shown in Figures 1V and 2.

Figure 4 is a perspective view of the vertically adjustable block forming one of the jaws of the tap holder clamp constituting part of the work support shown in Figures 1 and 2.

Figure 5 is a perspective view of the movable jaw plate and its guide pins, forming part of the tap holder clamp.-

Figure 6 is a perspective view of the tap holder. 1

Referring in detail to the drawings, the present work support includes a lathe vise which embodies a base clamp 5 for mounting the support upon the bed 6 vof the lathe. The bed 6 has a guideway 1 and side flanges 8 along the top of said guideway. The ordinary tool carriage of the lathe is mounted lfor movement in the guideway 1 lon, gitudinally of the bed 6 in a Well known manner.

The base clamp 54 includes a pair of spaced similar horizontal clamping plates 9 and 9a adapted'to span the guideway 1 directly above V planeado August so, 1944, serialNo.- `551,866

...(.CIl-Hfilll I l land `fl'a'elow the lflanges f8, respectively; These clampingplates 9' andi-9d are of awidth to engagetheupperfandlower surfaces of the flanges #tati theiri longitudinal edge portions.A Passing f hfthecorrespondingopposite ends of thev ping plates`9` andi-19a intermediate the sides ne' latter are' clampngbplts* Inland ma having nuts ll threaded thereon for'ndrawing the plates ,9, land 9a, `together andinto tight clampf'in'g engagement vvith the'fla'nges 8. lIn this way, l"the "vise ifsscurely''mounted in 'a fixed position fa' "thedesired point along the guideway 1 of elathe. bed'. y'Rigiil owithfand rising from the 'lampingfplate oiflthe base clamp is a st If yvvhose,lower end s'threaded in an open- 4ngK,I3 ofsaidclamping plate 91 Thepost I2 is ev'ented `frornacoide'n'tally kthreading out of the .opening lebyjrnearis of 'a amb nut I4 threaded fon post"`i'2fand irnpinging the upper surface of mme 'i i@ Y 1 ',Q'VIlie latheiviseffurther includes aclamp I5 for tap holder.l 6,which clamp AI5y includes1 a; block Il;y provided witha ,verticalppeningi to be snuglylrslidablyreceived on the post I2. Set screws; lrare provided inoone- Sidgof. the blo-Ck.

11 and arranged. td mainte-the post -l 2 .to Secure the, block. `1.1 any; desired venicauy ,adjusted :.ipQSition-frelative f.td postplf Alsarthe block I1 formsvthe stationary jaw of theiclamp- I5 and is fprovided with. transverse openings; 120. for sd- .able :reception @ofY -llaterallguide pins 2l xedto and projecting from the movable jaw plate 22 of the clamp I5. The movable jaw plate 22 is vertically disposed at'the side of block I1 opposite that vwhich carries .the set screws I9, and a clamping screw 23 freelypasses through an opening 24 in jaw plate 22 and is Ithreaded into an opening in the adjacent side of the block I1, as at 25. Iri practice, `the tap holder I6 is disposed between the upper portions of block Hand clamp plate 22, whereupon lthe screw 23 is rotated to draw the clamp plate 22 toward block I1 and thereby rmly clamp the tap holder, I6 tin place.

Slight loosening of screw 23 is all that is necesbore 26 may be larger at one end of the holder I6 than at the other for accommodating the shanks of taps of diierent sizes, and a set screw 21 is provided at each end of the tap holder I6 adapted to impinge the shank 21 of the tap inreadily understood and appreciated by those It will be particularly seen""` that the present work support isof ia compara-" skilled in the art.

tively simple and durable nature and composed .v of such simple parts that the same may be readily manufactured and easily .takenfapartor as-f l flanges at the sides of said guideway, comprising a base clamp, a post rigid `with and rising from saidbase clamp, a tap holder, and a tap holder clamp vertically adjustable on said post, said base clamp including a pair of substantially similar horizontal clamp plates respectively engageable along their opposite side edge portions with the upper and lower surfaces of the flanges at the sides of the lathe guideway, and clamping bolts passing through oppositeends of said clamp plates for drawing them toward e'ach other into gripping engagement with said anges, said tap holder clamp comprising a yblock vertically` slidable on the post for vertical adjustment,` means to rel'easably secure said block in vertically adjusted positions, a vertical adjustable clamp platecooperating with said block to clamp the tap. holder therebetween, and a clamp screw passsembled. Also, the device may be quickly and easily mounted in position upon the bed; vof4 the ylathe and willeflectively s upportI the -work in position.l VBy` simply loosening theproper set screw", the tan-may. be turned to present a new ,face to the grindirigeiement from time .to `.time as. desired.V *Minor changes maybemade in delxt ails of; construction illustrated and described,

such as fairly v,fall within theA v K spirit and scopezof the inventionas claimed.

v,1, A work sup-P Ofolfa lathe having avtool vcarriage guide'way and inwardly projecting -top iianges atflthe sides of said guideway, comprising a rb".ase"clamp,l a post rigid. with and rising 'frorifsaid base clamp, and a tap holder clamp vertically Aadjustable on said po'st, said base clamp Y includir'ig aA pair of 'substantially similar horizzontal clamp 'plates'r respectively engageable Jalongtheir opposite sideedge portions with the `upper andllower surfaces rof the iiangesat the lside'softhe lathe guideway; and clamping bolts.

passing through opposite ends of said' .clamp *platesfor drawing themftoward each other into lgrippingengagement with4 said flanges; and a 'it'apl holder `'removably retained in said tap" holder vl"clamp and comprising Van yelongated bar of rectangular cross sectionhavingfan 'axial bore for `Y reception-ofl the shank of a, tap to loe-supported, -anda'setlscrew carried by said bar and arranged Ito vimpnge the tap/holder; shank-to f secure the fsam'eI insaidtbore. i 512; Afw'orksupp'ort fora-lathe having a -tool carriage g'uideway and inwardly projecting v.topp

ing through said clamp plateand threaded into said `block for drawing the clampv plate toward i the latterland into .gripping engagement with the fiwllflldel.i y

3.3A work support for alathe having a tool carriage guideway and inwardly projecting top 25.

flanges at the sidesof .said'gudeWaM Comprising a base clamp, va postrigidwith and rising from, said `*base clamp,.a tap holder, and a tap 'holder' clamp, verticallyadjustable on said post,

fsaid base clamp including'ma'pair, of substantially l"similar l.horizontal clamp platesrespectively en- `ga'geable along their lopposite side edge portions with the upper and lower surfaces of the' flanges yat thesides of the lathe guidevvay;v "and clamping bolts passing through lopposite ends of said clamp plates for drawing them toward each other into gripping engagement with said flanges, said tap l'iolderclarnp comprising a' block vertically Vslid- .'able on the post for/verticaladjustment, means vto releasably secure said block*` in vertically adjusted positions, a vertical adjustable clamp plate cooperating with said block to clamp the tap 'holdertherebetweem and a clamp rscrew' passing through said clamp plate and threaded into said blockfor' `drawing the` clamp platetoward the `latter andinto "gripping'fengagementwith the "tap holder,` Aand guide lpins rigid with and pro- 4*jecting' laterally from'said clamp'plate, and slidably extending `through Vsaid block to cause rectilinear movement of the clamp plate toward the block whenadjusted'by said'clamp screw.r

Louis M. HoLTz. 

